Ethan, chris and jon have $90 altogether. ethan has a half of that amount and chris has one third of all the money. how much does jon have?

How many zeros does the function f(x)=4x3-x2+1 have

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?